Results 51 to 60 of about 7,920 (252)

Research on Integrated Intelligent Control and Energy Saving Technology of Electro‐Hydraulic Excavator

open access: yesEngineering Reports, Volume 7, Issue 7, July 2025.
The research proposes a variable‐speed fixed‐displacement pump control strategy combined with a fuzzy PID algorithm. A co‐simulation model is developed, key parameters are set, and comparative energy consumption analyses are conducted between the variable‐speed fixed‐displacement pump and the fixed‐speed variable‐displacement pump through simulation ...
Qiaohong Ming, Yangyang Wang
wiley   +1 more source

Research and application of speed stability of flow stabilizing valve in direct-drive electro-hydraulic servo system

open access: yesInternational Journal for Simulation and Multidisciplinary Design Optimization
When the direct-drive electro-hydraulic servo system is used for position control of hydraulic actuators, load unbalance or external disturbances can cause flow imbalance, leading to poor speed stability of the actuator and thus reduced position accuracy.
Shen Huan-huan, Liu Ruo-lan, Li Ge-qiang
doaj   +1 more source

Modeling and Performance Improvement of the Constant Power Regulator Systems in Variable Displacement Axial Piston Pump

open access: yesThe Scientific World Journal, 2013
An irregular performance of a mechanical-type constant power regulator is considered. In order to find the cause of an irregular discharge flow at the cut-off pressure area, modeling and numerical simulations are performed to observe dynamic behavior of ...
Sung Hwan Park   +2 more
doaj   +1 more source

Simulation research on pitch angle control system of boom roadheader

open access: yesGong-kuang zidonghua, 2019
At present, detection error of pitch angle of roadheader is mainly compensated by manually controlling front blade and rear support of roadheader, the compensation range is very limited, and the efficiency, control precision and automation degree are low.
ZANG Fuyu   +6 more
doaj   +1 more source

Design Of Two-Stage On/Off Cartridge Valves For Mobile Applications [PDF]

open access: yes, 2017
Cartridge valves are widely used in mobile applications, where they are screwed in manifolds, to realize opportune circuit layouts. These valves are quite simple in operation but require a sophisticated design in order to meet all the requirements needed
BORGHI, Massimo   +4 more
core   +1 more source

Design and Characteristic Analysis of Reflux Type Mechanical Hydraulic Hybrid Transmission for Wind Turbines

open access: yesWind Energy, Volume 28, Issue 7, July 2025.
ABSTRACT With the development of wind turbines to deep sea, its working environment is more and more severe, which puts higher stability requirements of the transmission chain. A variety of front‐end speed regulation methods have been proposed because this method can improve the reliability of wind turbines by eliminating electrical components with ...
Fuquan Dai   +5 more
wiley   +1 more source

1D Simulation of Heat Transfer in Cable Channel [PDF]

open access: yesTransactions of the VŠB-Technical University of Ostrava, Mechanical Series, 2010
The paper deals with the use of 1D simulation tool AMESim to predict the steady state temperatures of a high-voltage electrical cables which are installed inside a cable channel.
Jiří HEJČÍK, Miroslav JÍCHA
doaj  

Model‐Based Exploration of Web Guiding Behavior for a Novel Battery Cell Stacking Process

open access: yesEnergy Technology, Volume 13, Issue 3, March 2025.
The modeling of new processes and machines enables a rapid ramp‐up of often untested or immature technologies. The exact guidance of electrode webs is an important process step for robust production. Herein, a model for the web guidance of electrodes is integrated into an overall machine model for a new stacking technology.
Kamal Husseini   +3 more
wiley   +1 more source

Dynamic modeling and simulation of a heat pump system for enhancing cycle flexibility [PDF]

open access: yesE3S Web of Conferences, 2019
This paper presents a dynamic simulation of a heat pump using butane refrigerant for the purpose of integration with a combined cycle power system and thermal energy storage to enhance flexibility. A dynamic model of a heat pump system is developed using
Watanabe Yutaka, Traverso Alberto
doaj   +1 more source

Analysis of Influence of Control Valve Structure on Fuel Injection Performance of an Injector

open access: yesEnergy Science &Engineering, Volume 13, Issue 2, Page 894-908, February 2025.
ABSTRACT On the basis of the structure of the traditional electromagnetic injector, this paper proposes a new type of electromagnetic injector structure by changing the opening mode of the control valve. Taking the fuel injection consistency and response time as the evaluation indexes, a one‐dimensional simulation model was established to compare the ...
Yifan Yue   +3 more
wiley   +1 more source

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